Trend scale on graphs

[tassiebean]

Is it possible to set the max and minimum values on the trend graph? It auto-scales but I would like to set the major and minor intervals (in this case I set 'Always show zero on Y axis). Specifically, for temperature (see example screen shot attachment), I would like to have the major increments set at 5 degrees (not 4.2 degrees as shown here). I am using the 5500SHAC (as you might have guessed).

Wonderful forum, by the way, and great admin and senior member help!!

Thanks!